Vladimir Putin says the attack near Moscow was committed by ‘radical Islamists’ He added that the attackers were fleeing to Ukraine and wants to know 'why' The attack by an armed commando on a concert hall in the suburbs of Moscow on Friday evening left at least 137 dead. The Islamic State claimed responsibility for the attack a few hours after the incident.

The four main suspects have already been placed in pre-trial detention until May 22. They face a life sentence. Three other suspects were remanded in custody on Monday until the same date.